Belt calculator



G. R. FICKERT.

BELT CALCULATOR.

arwucmou FILED man. 192:.

Patented Nov. 28, 1922.

VII/11111441111112" mvmron' Gus-r411 Human/Chaser ATTORNEYS Patented Nov. 28, 1922.

UNITE STATES 1,437,29s RATE-NT 's-R c's.

event' Fromm, or au ties, m 1mm cALcirnn'lron;

Alienation filed Angnlt in, seen ihqmxmaln To all itmy mam-r citizen of'the -nite'd-Stntes, end a. resident of *Hobok'n, -in" the' cdhntj of Hudson and Stilt: [of New Jiheg; have inherited a; new a'nd'lmpmved Belt "Cilulaitozybf which the 'iollowin'sz' is'a full. clear; nnde'xiict desclip- I use:

"This manna-n neties to 'a 1161i] celcuhitor. The genei sl-ob c'ct'of the inyentmn is to pro-tide a simple device for tulcilla'ting the eopenngm of belting when the me'zisure "meut ovehl'lief "ml-eye as known and. means foiireto'iding t @tfuemn'ufe 'I'his'obje'ct is'accoznp'lished by providing; ncirtiilai' scaile le m'emmg feet, and inconju'nction witlithis circular scale a plurality of bircnlnr scales representin inches 01: belting'fo be but may for the 'ifirent factors'to allow-for stretch and providing in conjunction with the scales index blades on which the various factors are marked to indieteth'e same to he need."

This ahdf other objects of the invention will'be' more clearly; u derstood from the follbivihg; detailed description and accom- 't'd gm 1- is a top plan 'viewof the calculater.

Figure 2 is a bottom plan view of the calclilator.

"Eig'nre 3'is a ci'oss section along the line Finn-e1 is e cross section along the line 'Fignre 1. 1

Figure 5 s 'arplnnview of th'e gehrimg fon operfiting the index blades.

,Refei'rm'g to the elbow-mentioned figures, a disk 10 has-n plurelity of concentric circular scnls' In'arked on each side. The outside set-1e 11 represents feet and consists of a circle of '11 predetermined diehieter divided intoii 'ual arts. The remaining scales grfiuate l 12 are in inches and the smaller divisions-rep s nt jsixteenths of an inch. All the scales 'aienumbered fi'otn a common bahe line-l3. This disk 10 me be-mnde'- of 's'ui'tobrlematerial, such as bj-e, or'well cu'red wood It has en opening i4 extending throu h it. Teeth 15 are'ou'tin the dis aroun the opening '14:.

A air of'index wdes 16 and 17 are re vid r in conjnpcti onwith the disk 10. he index'blade 16 has anenlsrged base portion 18 integral with which 15-8 drum-shaped portion 19. The diameter of the drumshaped portion 19' is eqiitilwo the diameter of the 4115b; opening l4 takeneci'osi: fror'n'the top of-hnetooth to the top 6f' theone iiia withitheteeth 1a fironnd the oiienin' in'the disk-10; Fixed cd'me get21;-, m a mft 22, as

which has itsup'p'er iiortionthieaded; This shift 22 extends thro allo '23'inth'e enlarged base p rtib1%et blade 16; The indeitblade 16 is"1neuhted on'the disk I0 with the d'rlnhsliaped [ibitidlr'iil' fitting into the opening 14; The blhide 17 s placed parolleltothe index blade lfi'and is connected to the dEuni IQ by m'hns'of screws 20'. Mounted on the threaded portion of the shaft 22 is :i. thumb nut 245, which is free to make a partial rotation without turnind-the shed}; and is retained on the shaft by moths "ofhbhmllkflnb 25;" When this thumb'nut 24 m s tothe' leflgit" engages the knob 25- endthentumsthe shaft to 22 rotating thegesi 211ml servesto'rotwte blades are so mounted thut 'they rotate about the center of the concentric scales '11 $114112.

The indx blades have marked-thereon correct length of belting. Marked on -the' index blade 17 are thepioper factors to use for sin lo and double belting. Integral with the en rgecl'base'portion 18 isa. projection 26', which has two arc-shaped faces 27 and 28. These arc-shaped faces 27 and '28 are notched and the-notches numbered, on the one sideup to eleven and on the otherside' up to seven. The one numbered to eleven is-t'o re Sresent inchesend' the'iither numbered to seven istoireprwent-eighths of an inch,- these words being stamped on the enlarged base portion as aigulde to the user. To 6 crate with these notched arc-shaped faces and 28 are two pointers 29 30 to register any true measurement that-has been made: i In 1 with the pointers 29 and 30 are handle portions 31 and 32 which extend at other.--eppa.ra.tn s ;is obtained! The index the inner odgeofs right angles. h d e-po ons are and shaft gotetebl moun provided twithicylindrical" openings 33 expletefsnid. i. P ten downward from the top. Located of the mm or plate, means w: in the cylindricelopenings 33 are springs 34. said shaft for opera These springs are held in eontactwith the indexblede, andlh'em? rl chngtheshaft handle portions 31 and 32 by means of bolts gainst rotation to the index blade 35, which are fastened to the enlarged" base in any desired position. portion 18 of the blade 16. ,The heads 36 of EL AS a. new article of manufacture, a belt these bolts are of such a size that they slide calculating 'mech comprising an aninthe cylindrical opening in the handle pornular late having a. plurali of- BOG-Ins tions luand 32. marked hereon, an indexblede faclhepperation of this device is as follows: tors marked thereon rotateblymounted on e. .true,, measurement over the pulleys or said annular plate, teeth formedon finder plete, a. gear :are set so as to indicate a true length and shaft rotatebly.-mounted'on seiijndex unl ke scale generating feet. The pointer blade, said our m shing with the gear teeth 29;5lS:=$6t-tO.-in cate the number of inches of the can or plate means 'tedwith and, the filolnter 30 the number of eighths said shaft for operating it to operate theinofnn in The factor for the particular do: blade, means. for I0olnng, .the shaft of 'beltingga then selected -end the against rotation to retain the index'blnde sc correspond ng with the factor is in any desired position,

raised This gzvesthe number of inches to mcansmounted. 'on the index blade. .85

the truc len h in order to rive 4. As a new article of manufacture, belt the correct length of bel ll'lg to use to allow calculator of the class describedgcornprisfor-stretch. For cleerness, the example shown in Figscales marked thereon gear th f0 urel will be described. In this case the the inner e of ennulnr index tru length measured over the pulleys was blades rota ly'mounted on said annular eleven feet, e1 lit and five-elgliths inches. plate, one on each side of the same, ajheft The index bled: 16 was set to indicate that rotatably mounted on one of index lengthron the scale represeruunfie eet. The blades, 9. gear fixed to said shaft and mesh-v factoristhetxlilselecltedfiid let 1t- Jigz than; leg with the maid annular reiclin .on escaew ch correspon wi plate, a nut lli'uu this faitor we discover that the amount to with said shaft for otetingit' when turned be deducted from the true length is one and inane direction and lodring it against, rote.

welve-sixteenths inches. tion when turned in the other direction,

I wish to state in conclusion that while means for retaining said nut on the shaft .;.;-the illustrated examples constitute a pracand registering means mounted on orient tical ernbodlmentof my invention, I do not the index blades. I limihmyself strictly to the mechanical de- 6. As a new article of manufacture belt herein illustrated since manifestly the calculator of the olses described, com same can be considerably varied without dean annular plate having a lurelityplgscnles I05 .gorting from the spirit of the invention 'as marked thereon, gear formed on the l'urnlit of scales mar efined in the appended claims. mner'edge of 881d annular Late, a drum Cl im having a. plurality of'index'b es attached L A. belt calculating mechanism of the thereto rotatebly mounted in said annular described, comprising a disk having a plateend'having-ochamher provided time thereon, an min to house a r osheftrotetably molmted e hevizg factors marked thereon roin one of so: in ex blades, :1 gear fixed to on the disk, gear means said shaft and located in the chamber or r b tatably moun with the disk and index blade for formed'inthe drum, Said 'meshingwjth means provided in conjunction with the gear three. ent'wi rotating one with respect to the other, and the teeth ofthe annular [L be, a, nut

ded t the upper end 0 means to lock the same against rotation to the shaft, means provided in conjunction retain'the index'blnde in any desired posiwith the shaft for rete-ining the, nut on the tion. shaft, saldnut serving torotete the shaft 2. As a new article of manufacture, a belt when turned in one direction and to lock it 4 calculating mechanism, comprising an anagainst rotation when turned in the opposite nular plate having a plurality of scales d1rection,. registering gointers mounted ,on marked thereon, an index blade having facthe drum, and means r retaining themin tors marked thereon rotatably mounted on any position to which they have been set.

n l pla e, a gear GUSTAV R, FI01fc nn'r. 

